|
|
Post by dcohio on Mar 15, 2021 17:14:27 GMT -5
I haven’t used the 50 but have used a bit of the flex 30 a cpl years ago on a project and had a few issues. Not necessarily with the product curing or anything but mostly with pot life once mixed. I need bubble free casts and by the time I vacuum it id only have a very short window to pour and was seriously in a mad dash to get poured before it would start setting. The short demolding time is great but the rush caused a good bit of wasted product and poor casts. Is there anything that can be done or additive that would extend potlife? I’m sure there’s a trade off most likely with demolding and curing times but if I had less wasted product and castings that would be worth it for what I’m doing.
Thanks in advance,
Doug
|
|
|
|
Post by notoes on Mar 17, 2021 7:13:39 GMT -5
I use the Flex 50 in small castings but I don't use a vacuum and I don't really see a problem with bubbles. Try doing it without vacuuming and see if you still get bubbles. You can also try cooling down each side a little to extend the open time a bit.
|
|
|
|
Post by dcohio on Mar 17, 2021 14:43:17 GMT -5
I use the Flex 50 in small castings but I don't use a vacuum and I don't really see a problem with bubbles. Try doing it without vacuuming and see if you still get bubbles. You can also try cooling down each side a little to extend the open time a bit. I have casted the 30 without vacuuming but the bubbles were an issue since what I’m casting are fairly thin walled. I did try cooling both a and b and it did extend my pour time but the viscosity change add another set of hurdles which is why I was looking to see if there was an additive. It may just end up being something I have to just play with unfortunately. |
|
|
|
Post by notoes on Mar 23, 2021 6:37:16 GMT -5
Yes cooling them does add a difference to how they work and how you have to work them. A thinner wall should actually give it more area to release the bubbles unless it's a tall thin wall which would be a problem in itself, I'm sorry I couldn't help there. It does look like it will be something you do have to experiment with, let us know how it comes out and what works for you as it may help someone else.
|
|
